47781123 has 8 divisors (see below), whose sum is σ = 68608848. Its totient is φ = 29403744.

The previous prime is 47781109. The next prime is 47781179. The reversal of 47781123 is 32118774.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47781123 - 2⁶ = 47781059 is a prime.

It is a super-2 number, since 2×47781123² = 4566071430282258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47781103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 612540 + ... + 612617.

It is an arithmetic number, because the mean of its divisors is an integer number (8576106).

Almost surely, 2^47781123 is an apocalyptic number.

47781123 is a deficient number, since it is larger than the sum of its proper divisors (20827725).

47781123 is a wasteful number, since it uses less digits than its factorization.

47781123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225173.

The product of its digits is 9408, while the sum is 33.

The square root of 47781123 is about 6912.3890949512. The cubic root of 47781123 is about 362.8708797119.

Adding to 47781123 its reverse (32118774), we get a palindrome (79899897).

The spelling of 47781123 in words is "forty-seven million, seven hundred eighty-one thousand, one hundred twenty-three".